为探究典型岩溶区PFASs(per-and polyfluoroalkyl substances,全氟化合物)分布特征及生态环境与健康风险,采用超高相液相色谱串联质谱对都安县地下水、地表水及污染源中PFASs进行分析测试.结果表明:①PFPeA(Perfluoropentanoic acid,全...为探究典型岩溶区PFASs(per-and polyfluoroalkyl substances,全氟化合物)分布特征及生态环境与健康风险,采用超高相液相色谱串联质谱对都安县地下水、地表水及污染源中PFASs进行分析测试.结果表明:①PFPeA(Perfluoropentanoic acid,全氟戊酸)是该地区检出率最高的PFASs污染物,检出率为100%,ρ(PFPeA)检出范围为0.067~1.021 ng L.ρ(PFASs)平均检出情况满足污染源(2.592 ng L)>地表水(0.737 ng L)>地下水(0.340 ng L),污染物检出种类的平均值满足污染源(7.1个)>地表水(4.4个)>地下水(2.9个).②研究区内仅有G2、S9、S13、P3采样点ρ(PFASs)可能受点源类污染源的影响较大,整个研究区PFASs分布特征及质量浓度受大气沉降影响较小.地表水及地下水ρ(PFASs)较高的采样点基本集中在人类活动聚集区;由于岩溶作用影响,东南部地下水中ρ(PFASs)相对较低.③地下水、地表水及污染源中PFASs的来源均可以分为两类,一类是以PFOS(perfluorooctane sulfonate,全氟辛烷磺酸)为主产物的五金电镀、消防、采矿、电子等行业,另一类可能主要与农业活动相关,来源于农用塑料品及其降解产物.④在利用当前已有参数进行评价时,都安县水环境中ρ(PFOA)(perfluorooctane acid,全氟辛酸)和ρ(PFOS)尚未达到对生态环境和人体健康具有风险的水平.研究显示,西南岩溶区水环境中ρ(PFOA)和ρ(PFOS)尚未达到对环境及人体健康具有风险的水平,但鉴于岩溶区特殊的水文地质条件,仍需加强产氟工矿企业的控制.展开更多
To understand potential ecotoxicological effects of electrical and electronic equipment waste （e-waste） recycling and polybrominated diphenyl ethers （PBDEs） bioaccumulation in loaches, a semi-field experiment usin...To understand potential ecotoxicological effects of electrical and electronic equipment waste （e-waste） recycling and polybrominated diphenyl ethers （PBDEs） bioaccumulation in loaches, a semi-field experiment using Chinese loach （Misgurnus anguiUicaudatus） as experimental fish was performed. Larval loaches were kept in net-cage for three months in an e-wastes recycling site and a reference site in Southeastern China. There was significant difference of the survival rate between the loaches from the e-wastes recycling site （27%, 19/70） and from reference site （70%, 49/70）. Histopathological responses were also found in all the livers examined in loaches from the e-wastes recycling site. These results showed that mixed pollutants resulted from e-wastes recycling led to ecotoxicological effects on loaches. The bioaccumulation of polybrominated diphenyl ethers （PBDEs）, the main pollutants in e-waste, in loaches was also studied, the mean concentration of total PBDEs in sediment was 6726.17 ng/g wet weight and in water samples was 4.08 ng/L （dissolved phase）. BDE 209 was the dominant congener in sediment and with relatively high concentration in water. Relatively low concentration of BDE 209 （less than 0.01% of total PBDEs） and high concentration of BDE47 （up to 39.34% of total PBDEs） were detected in loaches.展开更多
文摘为探究典型岩溶区PFASs(per-and polyfluoroalkyl substances,全氟化合物)分布特征及生态环境与健康风险,采用超高相液相色谱串联质谱对都安县地下水、地表水及污染源中PFASs进行分析测试.结果表明:①PFPeA(Perfluoropentanoic acid,全氟戊酸)是该地区检出率最高的PFASs污染物,检出率为100%,ρ(PFPeA)检出范围为0.067~1.021 ng L.ρ(PFASs)平均检出情况满足污染源(2.592 ng L)>地表水(0.737 ng L)>地下水(0.340 ng L),污染物检出种类的平均值满足污染源(7.1个)>地表水(4.4个)>地下水(2.9个).②研究区内仅有G2、S9、S13、P3采样点ρ(PFASs)可能受点源类污染源的影响较大,整个研究区PFASs分布特征及质量浓度受大气沉降影响较小.地表水及地下水ρ(PFASs)较高的采样点基本集中在人类活动聚集区;由于岩溶作用影响,东南部地下水中ρ(PFASs)相对较低.③地下水、地表水及污染源中PFASs的来源均可以分为两类,一类是以PFOS(perfluorooctane sulfonate,全氟辛烷磺酸)为主产物的五金电镀、消防、采矿、电子等行业,另一类可能主要与农业活动相关,来源于农用塑料品及其降解产物.④在利用当前已有参数进行评价时,都安县水环境中ρ(PFOA)(perfluorooctane acid,全氟辛酸)和ρ(PFOS)尚未达到对生态环境和人体健康具有风险的水平.研究显示,西南岩溶区水环境中ρ(PFOA)和ρ(PFOS)尚未达到对环境及人体健康具有风险的水平,但鉴于岩溶区特殊的水文地质条件,仍需加强产氟工矿企业的控制.
基金supported by the Knowledge Innovation Program of the Chinese Academy of Sciences(No. KZCX2-YW-420-3)the National Basic Research Program (973) of China (No. 2003CB415005)the National Natural Science Foundation of China (No.20437020, 20677074)
文摘To understand potential ecotoxicological effects of electrical and electronic equipment waste （e-waste） recycling and polybrominated diphenyl ethers （PBDEs） bioaccumulation in loaches, a semi-field experiment using Chinese loach （Misgurnus anguiUicaudatus） as experimental fish was performed. Larval loaches were kept in net-cage for three months in an e-wastes recycling site and a reference site in Southeastern China. There was significant difference of the survival rate between the loaches from the e-wastes recycling site （27%, 19/70） and from reference site （70%, 49/70）. Histopathological responses were also found in all the livers examined in loaches from the e-wastes recycling site. These results showed that mixed pollutants resulted from e-wastes recycling led to ecotoxicological effects on loaches. The bioaccumulation of polybrominated diphenyl ethers （PBDEs）, the main pollutants in e-waste, in loaches was also studied, the mean concentration of total PBDEs in sediment was 6726.17 ng/g wet weight and in water samples was 4.08 ng/L （dissolved phase）. BDE 209 was the dominant congener in sediment and with relatively high concentration in water. Relatively low concentration of BDE 209 （less than 0.01% of total PBDEs） and high concentration of BDE47 （up to 39.34% of total PBDEs） were detected in loaches.
